Abstract:

The June 2013 interferometric sidescan mapping focused on 3 objectives related to geomorphology, habitat, and sedimentary processes: 1) Conduct a survey of a shelf break canyon that is a study site for circulation modeling (Wienders and Clark group to verify accuracy of.) 2) Survey along the margin, going westward, to assess benthic habitats. Paleoshorelines and/or upper slope habitats are of interest. 3) Conduct surveys of two slope canyon systems that head large sediment-gravity-flow channel systems entering the Desoto Canyon along its northern margin (area generally south of the Pinnacles trend). This dataset contains the underway events from this cruise.

Suggested Citation:

Locker, Stanley. 2014. WB 1318 Underway events, interferometric sidescan sonar of sedimentary processes and benthic habitats, northern margin of the DeSoto Canyon, June 25-29, 2013. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/N74M92KQ

Purpose:

To characterize sea floor geomorphology, bathymetry, sediment, and primary benthic habitats specific to the Gulf of Mexico with an emphasis on topographical features that influence deep sea to shelf connectivity.

Data Parameters and Units:

Sidescan sonar (OIC files), ADCP Data, Met Data Depth (m), Air temperature (deg C), Heading, Pitch, Roll (deg), WXT barometric pressure (hPa), Latitude (deg), Longitude (deg), Distance to waypoint (nmi), EDO speedlog, GPS navigational data, Rain accumulation (mm), Rain intensity (mm/hr), Humidity (%), Wind direction (deg), Wind speed (m/s), Temperature (deg C), Conductivity (mmho/cm), Salinity (psu), Sea temperature (deg C), Sound velocity (m/sec), WET Labs CDOM [mg/m^3] Fluorescence, Short wave radiation (w/m2)

Individual Files: